rg@tux:~/code/me/trip.rb$ ruby -v
jruby 9.2.9.0 (2.5.7) 2019-10-30 458ad3e OpenJDK 64-Bit Server VM 25.242-b08 on 1.8.0_242-8u242-b08-0ubuntu3~18.04-b08 +jit [linux-x86_64]
rg@tux:~/code/me/trip.rb$ ruby --debug -S rspec spec/
..FF.....F....................